There are 5 classifications of animals:
- Mammals
- have fur or hair
- have live births
- have ears that stick out
- breathe with lungs
- warm-blooded
- Amphibians
- breathe with lungs and gills
- have webbed feet
- moist smooth skin
- lay many eggs
- cold-blooded
- Reptiles
- have dry skin
- have scales
- have live births or lay egg
- have ear hole
- cold-blooded
- Birds
- have feathers and wings
- lay eggs
- have two legs
- have ear holes
- warm-blooded
- Fish
- breathe underwater with gills
- live in the water
- lay many eggs
- have scales and fins
- cold-blooded